Not really a bad TCM but an electrical problem yes. Not flashing the code could be a bad TCM, make damn sure you have metal to metal contact with your jumper, did the CEL flash and the ABS also (if installed). Shifting manually says the tranny is OK mechanically, are you very sure it did not go into first gear. Watch the tach as you drive from a dead stop, it should go into first if you shift it into first.
The shift solenoid could be the problem also, any cheap repair manual will tell you how to test the solenoids and how to monitor them for shifting properly, see if the library has your book. Do you have a volt meter.
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